📈 Investments 9 min read·Updated 1 July 2026

What is a SIP? The Complete Guide to Systematic Investment Plans

A Systematic Investment Plan (SIP) is a way to invest a fixed amount into a mutual fund every month. It is India's most popular way to build long-term wealth — for good reason.

Why SIPs work

SIPs enforce discipline. You invest regardless of market mood.

They average your cost — you buy more units when NAV is low, fewer when it is high (rupee-cost averaging).

They exploit compounding — the longer you stay, the more your gains earn their own gains.

The SIP maths

Future Value of a SIP

FV = M × ((1 + i)^n − 1) / i × (1 + i)

· M = monthly investment
· i = monthly return = annual return ÷ 12 ÷ 100
· n = number of months

₹10,000/month for 15 years at 12% p.a.

Total invested: ₹18,00,000
Future value: ~₹50.4 lakh
Wealth gained: ~₹32.4 lakh — mostly from compounding, not fresh contributions.

Benefits of SIPs

Start with as little as ₹500 per month.
Auto-debit removes the temptation to time the market.
Equity SIPs qualify for long-term capital gains after one year, taxed at 12.5% beyond ₹1.25 lakh a year.
Easy to increase (step-up SIP) as income grows.

Pro tips

Increase your SIP by 10% every year — a step-up SIP can grow your final corpus by 40–50%.
Stay invested through market falls. That is exactly when SIPs buy the most units.

Common mistakes

Stopping SIPs during a correction.
Chasing last year's top-performing fund every year.
Investing only in ELSS for tax and treating it as pure wealth building — pick pure equity funds separately.